Means for lubricating centrifugal separators



UNITED STATES,

PATENT OFFICE.

FREDERICK HART, OF POUGHKEEPSIE, ASSIGNOR TO D. H. BURRELL & COMPANY, OF LITTLE FALLS, NEW YORK.

MEANS FOR LUBRICATING CENTRIFUGAL SEPARATORS.

SPECIFICATION forming part of Letters Patent N0, 405,212, dated June 11, 1889.

Application filed September 10, 1888. $en'al No. 284,978- (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK HART, of Poughkeepsie, in the county of Dutchess and State of New York, have invented certain new and useful IIIIPIOVGIIIQIIES'IH Means for Lubricating Centrifugal Separators, of which the following is a specification.

My invention relates to that class of centrifugal separators, which are provided with a drum or bowl resting on a spindle, by which the drum or bowl is supported and rotated.

The object of my invention is to improve the construction of the parts by which the drum is rotated and supported, so as to render such parts self-oiling and dust-proof.

My invention consists of the improvements which will be hereinafter fully described, and

pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical section of a centrifugal separator provided with my improvements. Figs. 2, 3, and 4 are horizontal sections in lines 5003, y y, and z 2, Fig. 1, respectively.

Like letters of reference refer to like parts in the several figures. 1

A represents the base or bed plate of the machine, provided with a depending central hub or socket to, to the lower end of which is secured a plate a, having a central opening a Bis a vertical standard, secured with its lower end centrally in the base-plate A. The lower end of the standard is provided with a flange b, which rests upon the plate a, and the cavity of the socket Ct is filled with an elastic cushion c of india-rubber or other suitable material, which fits snugly around the lower portion of the standard. The upper portion of the socket to is provided with an inwardly-projecting collar (Z, which fits snugly around the standard B. The elastic cushion 0 holds the standard securely in an upright position, and at the same time per-* wardly over the standard nearly to the baseplate A. Perforated washers e are interposed between the top of the spindle E and the top of the standard B, to adjust the spindle vertically when required.

f represents the belt-pulley formed on the spindle E, near the lower end thereof.

f represents a bearing sleeve secured within the upper portion of the spindle E and turning on the standard B, and f is a similar bearing-sleeve secured within the lower portion of the spindle. The lower bearing f is provided with a flange f which projects into an internal annular groove or oil-receiver g, formed in the socket to of the base above the collar 61 thereof.

H is an annular oil guard or receptacle, secured to the upper side of the socket to and projecting inwardly over the flange f? of the lower bearing-sleeve f I I represent hollow posts. secured to the base A on diametrically-opposite sides of the central standard B. The post I is provided with an internal oil-tube i, which ascends within the post to a level slightly above the top of the standard B.

j represents an oil-cup secured to the post I and communicating with the interior of the post I below the top of the oil-pipe 11.

7c is a pipe connecting the lower end of the pipe 2 with the annular groove g in the upper portion of the socket a, and 7c is a pipe which establishes communication between the lower end of the bore of the standard 13 and the' lower end of the cavity of the post I.

The cavities of the post I and connecting parts are filled with oil through the oil-cup j to the level of the oil-cup, so that the oil stands in the hollow standard B in contact with the washers e. The rotation of the spindle E upon the standard B causes the oil to flow outwardly from the top of the standard 13 between the rings or washers e, thence downwardly between the standard and the spindle E and into the annular receiver g, in which the oil is acted upon by the rotating flange f which drives the oil outwardly and through the pipe is, and upwardly through the pipe 2' within the post I. The oil flows over the top of the pipe 2', descends in the post I, and returns to the lower end of the hollow standard B through the pipe 71;. In this manner a continuous circulation of the oil is maintained while the machine is running.

The parts are so arranged and fitted thatdust is excluded from the bearing-surfaces. The cavity of the annular guard or receptacle 11 holds the surplus oil when the machine is at rest. The collar (1 of the base fits against the standard so snugly as to prevent the oil from descending to the elastic cushion c. The return-pipe k is preferably coiled or bent to render it sufficiently yielding to follow the slight lateral movement of the lower end of the standard, which occurs when the standard adapts itself to the rotating parts above.

L represents the bowl or drum, which is mounted upon the upper portion of the spindle E, and Z is the raised hub formed centrally on the bottom plate of the drum.

in is a spherical knuckle formed at the upper end of the spindle E, and m is a spherical socket formed in the apex of the hub Z and resting on the knuckle m. The drum is rotated by the friction between this knuckle and socket, and is free to oscillate to a limited extent on this spherical joint.

I do not wish to claim in this application the construction of the separating-drum and the self-adjusting feature of the supportingspindle, as these form the subject-matter of a pending application for patent filed by me on the 21st day of February, 1888, Serial No. 264,756.

I claim as my invention- 1. The combination, with the drum of a supporting-standard provid ed with an ascending oil-duct, a hollow spindle surrounding the standard, and an elevated oil-reservoir connected with the lower end of the oil-duct of the standard, substantially as set forth.

2. The combination, with the drum, of a supporting standard provided with an ascending oil-duct, a hollow spindle surrounding the standard, a base provided with an oil-receiver below the lower end of the spindle, an elevated oil-reservoir, and pipes connecting said reservoir with the oil-duct of the standard and with the oil-receiver below the spindle, substantially as set forth.

3. The combination, with the base provided with an oil-receiver g, of a hollow supportingstandard B, a hollow spindle E, surrounding said standard, a hollow post I, provided with an upright oil-pipe 1', arranged within the post, a pipe 7c, connecting the receiver g with the lower end of the pipe i, and a pipe k,con necting the lower end of the cavity of the post with the lower end of the hollow standard, substantially as set forth.

4;. The combination, with the base provided with an oil-receiver g, of a standard B, provided with an oil-duct, a hollow spindle E, surrounding said standard and provided with an outwardly-projecting flange within the receiver g, an elevated oil-reservoir, and oilcirculating pipes connecting the oil-reservoir with the receiver 9 and the oil-duct of the standard, substantially as set forth.

5. The combination, with the drum, of a supporting-standard provided with an oilduct, a hollow spindle surrounding the standard, a base provided with an oil-receiver below the lower end of the spindle and with a receptacle for the surplus oil above said oilreceiver, an elevated oil-reservoir, and circulating-pipes connecting the oil-reservoir with the oil-receiver and the oil-duct of the standard, substantially as set forth.

6. The combination, with the drum, of a base provided with an annular oil-receiver g, a standard E, provided with an oil-duct, a hollow spindle surrounding the standard, an elevated oil-reservoir, circulating-pipes connecting said reservoir with the oil-duct of the standard and with the oil-receiver, and an annular receptacle II for the surplus oil, secured to the base above the oil-receiver substantially as set forth.

\Vitness my hand this 30th day of August, 1888.

FREDERICK HART.

Witnesses:

1E0. ll. SHERMAN, .T. W. Rust. 

